diff --git a/kernel-src/arch/x86-64/mmu.c b/kernel-src/arch/x86-64/mmu.c
index d336d816..8bc0e10f 100644
--- a/kernel-src/arch/x86-64/mmu.c
+++ b/kernel-src/arch/x86-64/mmu.c
@@ -203,7 +203,7 @@ static void pfisr(isr_t *self, context_t *ctx) {
 	if (ctx->error & ERROR_FETCH)
 		vmmerror |= VMM_ACTION_EXEC;
 
-	if (vmm_pagefault((void *)ctx->cr2, ctx->cs == 8, vmmerror) == false)
+	if (vmm_pagefault((void *)ctx->cr2, ctx->cs != 8, vmmerror) == false)
 		_panic("Page fault", ctx);
 }